CN217451490U - 2+8 roller combined type thick plate blank large-reduction casting and rolling mill roller system aerial fog cooling device - Google Patents

Abstract

The utility model discloses a 2+8 roller combination type thick plate blank high-pressure casting and rolling mill roller system aerial fog cooling device, which comprises an upper water cooling beam, a lower water cooling beam, an upper guard plate assembly, a lower guard plate assembly and a water retaining cover plate, wherein the end part of the upper guard plate assembly, which is far away from the upper water cooling beam, is provided with a water storage tank, and the upper water cooling beam and the lower water cooling beam are provided with cooling assemblies; the 2+8 roller combined type thick plate blank high-pressure casting and rolling machine roller system aerial fog cooling device also comprises an upper roller neck cooling device, a lower roller neck cooling device and a water-resisting component; the upper roll neck cooling device is arranged at the upper roll neck and comprises a water spraying connecting pipe and a cooling water nozzle which are communicated, and the water spraying connecting pipe is communicated with the upper water cooling beam; the lower roll neck cooling equipment is arranged close to the roll neck of the lower roll and comprises a water delivery component and a nozzle which are communicated, and the water delivery component is communicated with the lower water cooling beam; the water-resisting component is arranged in the water storage tank in a sliding mode and is in contact with the roller surface of the upper roller, and is used for scraping redundant cooling water on the roller surface.

Description

2+8 roller combined type thick plate blank large-reduction casting and rolling mill roller system aerial fog cooling device

Technical Field

The application belongs to the technical field of slab continuous casting production, and particularly relates to a 2+8 roller combined type thick slab high-pressure casting and rolling machine roller system aerial fog cooling device.

Background

The 2+8 roller combined type thick plate blank high-pressure casting and rolling machine can overcome the defects of looseness and shrinkage cavity in the thick plate blank, comprehensively improve the density of the continuous casting blank and realize the stable production of thick plates and large-sized sectional materials under the condition of low rolling compression ratio. Compared with the working heating condition of the roller of the traditional roughing mill, the roller of the casting and rolling mill under large reduction has the following characteristics: 1. the continuous contact time is long, the pulling speed of the thick slab continuous casting machine is generally 0.5-1.25 m/min, so the contact time of the same part of the large press roller and the steel plate is longer; 2. the pressing amount of the large pressing roller is larger than 10mm relative to the length of the contact arc of the fan-shaped section under the soft pressing, and the large pressing amount determines that the contact arc of the large pressing roller and the steel billet is longer; 3. the contact temperature is high, the casting and rolling machine is arranged at the solidification end of the sector section under high reduction, the core part of the slab is not completely solidified during rolling, and the solidus temperature of most steel grades is above 1450 ℃, so the temperature of the part in contact with the steel billet is higher. The characteristics determine that the roll system of the casting and rolling machine needs a better cooling mode under high reduction. Different from the water cooling of a roughing mill roller, in order to prevent the continuous casting billet from generating cracks or expanding the original cracks due to too fast or uneven surface temperature reduction, water drops in the cooling process of the large-pressure lower roller of the casting and rolling mill are not allowed to be sprayed onto the surface of the continuous casting billet.

The existing roller cooling device can not meet the requirements of reducing the working heat convexity of the roller of the high-pressure casting and rolling machine and preventing the problems of deformation, cracks and the like of the high-pressure roller caused by poor cooling.

Disclosure of Invention

For solving the technical problem, the utility model provides a 2+8 roller combination formula thick slab is casting and rolling machine roll system aerial fog cooling device under big pressure solves because of the big roll-pressing deformation that the cooling is not good brings, crackle scheduling problem, simultaneously through configuration optimization, avoids the cooling water droplet to drench and causes surface damage to the continuous casting billet surface, improves the production quality of product.

The technical scheme adopted for realizing the purpose of the utility model is that the 2+8 roller combination type thick plate blank large-reduction casting and rolling mill roller system aerial fog cooling device comprises an upper water cooling beam, a lower water cooling beam, an upper guard plate component, a lower guard plate component and a water blocking cover plate, wherein the end part of the upper guard plate component, which is far away from the upper water cooling beam, is provided with a water storage tank, and the 2+8 roller combination type thick plate blank large-reduction casting and rolling mill roller system aerial fog cooling device also comprises an upper roller neck cooling device, a lower roller neck cooling device and a water blocking component; the upper roll neck cooling device is arranged at the roll neck of an upper roll of the high-pressure casting and rolling mill roll system and comprises a water spraying connecting pipe and a cooling water nozzle which are communicated, and the water spraying connecting pipe is communicated with the upper water cooling beam; the lower roll neck cooling equipment is arranged close to a roll neck of a lower roll of the high-reduction casting and rolling mill roll system, and comprises a water delivery assembly and a nozzle which are communicated, and the water delivery assembly is communicated with the lower water cooling beam; the water-resisting component is arranged in the water storage tank and is in contact with the roller surface of the upper roller.

Further, be provided with the guide in the aqua storage tank, water proof subassembly includes spring, scraper blade and is used for the adjustment the regulating block of the position of spring, the spring the scraper blade with the regulating block is all movable to be set up in the guide, just the spring sets up the scraper blade with between the regulating block, the one end of spring acts on scraper blade, the other end act on the aqua storage tank, the scraper blade with the roll surface contact of last roller.

Further, the lower guard plate assembly comprises an inlet lower guard plate and an outlet lower guard plate, the inlet lower guard plate and the outlet lower guard plate are respectively provided with the lower roller neck cooling equipment, the water delivery assembly comprises an elbow and a water delivery pipe, the elbow is respectively communicated with the water delivery pipe and the lower water-cooling beam, and the nozzle is communicated with the water delivery pipe.

Further, there are more nozzles disposed on the inlet underguard than on the outlet underguard; the nozzles on the inlet lower guard plate are arranged in a single row, and the nozzles on the outlet lower guard plate are arranged in two rows.

Furthermore, the upper water-cooling beam comprises an upper beam, an upper support, an upper water-passing block and an upper air-passing block, the moving end of the upper beam is lapped on the upper support and is fixed through a fastener, the upper support is connected with a transmission side bearing seat of the casting and rolling machine through two No. 1 guide rod bolts, and the fixed end of the upper beam is lapped on the upper water-passing block and the upper air-passing block and is fixed on an operation side bearing seat of the casting and rolling machine through a fastener; the water spraying connecting pipe is fixed on the upper water passing block through a threaded structure.

Further, the lower water-cooling beam comprises a lower beam, a lower support and a lower water-cooling air block; the movable end of the lower beam is lapped on the lower support and fixed through a fastener, the lower support is connected with a transmission side bearing seat of the casting and rolling machine through two No. 2 guide rod bolts, and the fixed end of the lower beam is lapped on the lower water vapor block and fixed on an operation side bearing seat of the casting and rolling machine through a fastener.

Furthermore, the guide rod hole of the upper support for mounting the No. 1 guide rod bolt and the guide rod hole of the lower support for mounting the No. 2 guide rod bolt are hinged holes, so that the upper beam and the lower beam can move along the length direction of the guide rod hole when being heated and expanded; holes for connecting the upper guard plate assembly/the lower guard plate assembly with a bearing seat of the casting and rolling machine are all long holes, and a set gap is formed between the upper guard plate assembly/the lower guard plate assembly and the bearing seat of the casting and rolling machine so that the upper guard plate assembly/the lower guard plate assembly can move when being heated and expanded.

Further, cooling assemblies are arranged on the upper water-cooling beam and the lower water-cooling beam; the cooling assemblies comprise inlet cooling assemblies and outlet cooling assemblies which are arranged at intervals along the rolling line direction, and each outlet cooling assembly/inlet cooling assembly consists of a plurality of cooling mechanisms which are arranged at intervals along the axial direction of the roller system; the number of cooling mechanisms in the outlet cooling assembly is not less than the number of cooling mechanisms in the inlet cooling assembly.

Furthermore, the upper water-cooling beam and the lower water-cooling beam respectively comprise a water collecting tank, a gas collecting tank, a water distribution pipe communicated with the water collecting tank and a gas distribution pipe communicated with the gas collecting tank, the water collecting tank, the gas collecting tank, the water distribution pipe and the gas distribution pipe form a frame structure, the cooling mechanisms are all aerial fog nozzles, and the aerial fog nozzles are communicated with the water distribution pipe and the gas distribution pipe.

Further, the 2+8 roller combined type thick plate blank high-pressure rolling-reduction casting-rolling mill roller system aerial fog cooling device further comprises a radiation partition plate, the radiation partition plate is hung on the upper protection plate assembly and located between the upper protection plate assembly and the lower protection plate assembly, and the radiation partition plate is of a foldable structure.

According to the technical scheme, the utility model provides a 2+8 roller combination formula thick slab casting and rolling mill roll system aerial fog cooling device under big pressure for cool off the last roller and the lower roller of casting and rolling mill roll system under big pressure, this 2+8 roller combination formula thick slab casting and rolling mill roll system aerial fog cooling device under big pressure includes the water-cooled roof beam, lower water-cooled roof beam, go up the backplate subassembly, backplate subassembly and manger plate apron down, the tip of keeping away from on the backplate subassembly on going up the water-cooled roof beam is provided with the aqua storage tank, it has a plurality of cooling module all to be provided with on upper water-cooled roof beam and the lower water-cooled roof beam at the interval, in order to last roller and the working surface of lower roller to spray the cooling water continuously, the cooling effect is good, reduce the hot convexity of working roller, 2+8 roller combination formula thick slab casting and rolling mill roll system aerial fog cooling device under big pressure still includes last roller neck cooling device, lower roller neck cooling device and water proof subassembly; the upper roll neck cooling equipment is arranged at the roll neck of the upper roll, comprises a water spraying connecting pipe and a cooling water nozzle which are communicated, the water spraying connecting pipe is communicated with the upper water cooling beam, and the upper water cooling beam is fixedly arranged, so that the occupied space is small, and the arrangement and installation of a casting and rolling machine and other components are not influenced; the lower roll neck cooling equipment is arranged close to the roll neck of the lower roll and comprises a water delivery component and a nozzle which are communicated, and the water delivery component is communicated with the lower water cooling beam; the water-proof component is arranged in the water storage tank in a sliding mode and is in contact with the roller surface of the upper roller, the water-proof component is guaranteed to be in contact with the roller surface of the upper roller all the time by adjusting the extending length of the water-proof component, the water-proof component is used for scraping redundant cooling water on the roller surface, the cooling water output by the upper roller neck cooling equipment completely flows into the water storage tank, and the water-proof component is used for cooling the diameter of the lower roller and fully utilizing resources. The utility model provides a 2+8 modular thick slab casting and rolling machine roller system aerial fog cooling device under big pressure goes up the water-cooling roof beam, goes up backplate subassembly, water proof subassembly and goes up and form semi-enclosed construction between the roller, lower water-cooling roof beam, backplate subassembly down, also form semi-enclosed construction between manger plate apron and the lower roll, guarantees that the cooling water can not drip to the continuous casting billet surface, prevents that the continuous casting billet from producing the crackle or making original crack extension because of surface temperature drops too fast or unevenly, has guaranteed the surface quality of continuous casting billet.

Compared with the prior art, the utility model discloses in, go up roller neck cooling arrangement and set up in last roller neck top through last water-cooling roof beam, carry out the roller neck cooling through the cooling water, occupation space is little, and original only reutilization goes up the cooling water of roller, carries the cooling water secondary to lower roll roller neck department, and lower roll cooling effect is poor, in order to improve the cooling effect of lower roll, the utility model discloses add lower roll roller neck cooling arrangement, guaranteed the cooling effect of lower roll roller neck, guarantee that the whole cooling is even. Meanwhile, a semi-closed structure is formed among the upper water cooling beam, the upper guard plate assembly, the water-resisting assembly and the upper roller, cooling water is prevented from dripping onto the surface of the continuous casting billet, cracks or original crack expansion caused by too fast or uneven surface temperature drop of the continuous casting billet is prevented, the surface quality of the continuous casting billet is guaranteed, and the production quality of products is improved.

Drawings

FIG. 1 is a view of the overall assembly structure of the device of the present invention;

FIG. 2 is a schematic structural view of an upper water cooled beam of the apparatus of FIG. 1;

FIG. 3 is a schematic view of the mounting structure of the radiation baffle of the apparatus of FIG. 1;

FIG. 4 is a schematic view of the aerosol nozzle mounting structure of the device of FIG. 1;

FIG. 5 is a schematic structural view of an upper shield assembly of the apparatus of FIG. 1;

FIG. 6 is a schematic view of the structure of the apron assembly and the downcomer chilled beam of the apparatus of FIG. 1.

Description of reference numerals: 1-upper water-cooled beam, 11-upper beam, 12-upper support, 13-upper water-through block, 14-air-through block and 15-1# guide rod bolt; 2-upper guard plate assembly, 21-inlet upper guard plate, 22-outlet upper guard plate, 23-water storage tank, 24-short corrugated pipe, 25-upper water sealing plate; 3-upper roll neck cooling equipment, 31-water spray connecting pipes and 32-cooling water nozzles; 4-lower water cooling beam, 41-lower beam, 42-lower support, 43-lower water vapor block and 44-2# guide rod bolt; 5-lower guard plate assembly, 51-inlet lower guard plate, 52-outlet lower guard plate, 53-lower water sealing plate; 6-a cooling assembly; 7-lower roll neck cooling equipment, 71-elbow, 72-water pipe and 73-nozzle; 8-a water-stop component, 81-a scraper, 82-a spring and 83-an adjusting block; 9-water retaining cover plate; 10-radiation baffle.

Detailed Description

In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.

The utility model provides a 2+8 modular thick slab is casting and rolling machine roll system aerial fog cooling device under big, the casting and rolling machine roll system is drawn together last roller and lower roll down to the pressure down, and 2+8 modular thick slab is casting and rolling machine roll system aerial fog cooling device under big pressure includes water-cooling roof beam 1, lower water-cooling roof beam 4, goes up backplate subassembly 2, backplate subassembly 5 and manger plate apron 9 down, and the tip of keeping away from water-cooling roof beam 1 on going up backplate subassembly 2 is provided with aqua storage tank 23. In the utility model, a plurality of cooling components 6 are arranged on the upper water-cooling beam 1 and the lower water-cooling beam 4 at intervals so as to continuously spray cooling water to the working surfaces of the upper roller and the lower roller, the cooling effect is good, and the thermal convexity of the working roller is reduced; the 2+8 roller combined type thick plate blank high-pressure casting and rolling machine roller system aerial fog cooling device also comprises an upper roller neck cooling device 3, a lower roller neck cooling device 7 and a water-resisting component 8; the upper roll neck cooling equipment 3 is arranged at the roll neck of an upper roll, the upper roll neck cooling equipment comprises a water spraying connecting pipe 31 and a cooling water nozzle 32 which are communicated, the water spraying connecting pipe 31 is communicated with the upper water cooling beam 1, and the upper water cooling beam 1 is fixedly arranged, so that the occupied space is small, and the arrangement and installation of a casting and rolling machine and other components cannot be influenced; the lower roll neck cooling equipment 7 is arranged close to the roll neck of the lower roll, the lower roll neck cooling equipment 7 comprises a water delivery component and a nozzle 73 which are communicated, and the water delivery component is communicated with the lower water cooling beam 4; the water-resisting component 8 is arranged in the water storage tank 23 in a sliding mode, the water-resisting component 8 is in contact with the roller surface of the upper roller, and the water-resisting component 8 is guaranteed to be in contact with the roller surface of the upper roller all the time through adjusting the extending length of the water-resisting component 8 and is used for scraping off redundant cooling water on the roller surface. The utility model provides a 2+8 roller combination formula thick slab is casting and rolling machine roller system aerial fog cooling device under big pressure goes up water-cooling roof beam 1, goes up backplate subassembly 2, water proof subassembly 8 and goes up and forms semi-enclosed construction between the roller, guarantees that the cooling water can not drip to the continuous casting billet surface, prevents that the continuous casting billet from producing the crackle or making original crack propagation because of surface temperature drops at the excessive speed or unevenly, has guaranteed the surface quality of continuous casting billet.

In order to ensure uniform cooling effect, in the embodiment, the cooling assembly 6 includes an inlet cooling assembly and an outlet cooling assembly which are arranged at intervals along the rolling line direction, and each of the outlet cooling assembly/the inlet cooling assembly is composed of a plurality of cooling mechanisms which are arranged at intervals along the axial direction of the roller system. Since the temperature of the outlet side of the roll system of the casting and rolling machine under high pressure is higher than the temperature of the inlet side, in the embodiment, the number of the outlet cooling assemblies is not less than the number of the inlet cooling assemblies, and preferably, the ratio of the number of the outlet cooling assemblies to the number of the inlet cooling assemblies is 1 to 2.5 times.

The utility model discloses do not specifically inject to the structure that 2+8 roller combination formula thick slab is big to push down each constitution of casting and rolling mill roll system aerial fog cooling device, go up water-cooling roof beam and water-cooling roof beam down in this embodiment and all include header tank, gas collecting tank, with the distributive pipe of header tank intercommunication and with the gas distribution pipe of gas collecting tank intercommunication, header tank, gas collecting tank, distributive pipe and gas distribution pipe constitute frame rack structure, cooling body is aerial fog nozzle 73, aerial fog nozzle 73 all switches on with distributive pipe and gas distribution pipe. The gas mist nozzles 73 are regularly arranged on the filter, in the embodiment, the number of the gas mist nozzles 73 on the outlet side is 21, and the number of the gas mist nozzles 73 on the inlet side is 10, and the ratio is 2.1 times.

In the present embodiment, as shown in fig. 2 and 3, the upper water-cooled beam 1 includes an upper beam 11, an upper support 12, an upper water passage block 13, and an upper air passage block 14, the moving end of the upper beam 11 is lapped on the upper support 12 and fixed by bolts, the upper support 12 is connected with the drive side bearing block of the casting and rolling machine by 2# 1 guide rod bolts 15, and the fixed end of the upper beam 11 is lapped on the upper water passage block 13 and the upper air passage block 14 and fixed on the operation side bearing block of the casting and rolling machine by bolts; the upper beam 11 is regularly provided with the cooling assembly 6, so that the working roll surface of the upper roll obtains the best cooling effect; a water spraying connecting pipe 31 in the upper roll neck cooling device 3 is fixed on the upper water through block 13 through threaded connection, a cooling water nozzle 32 is installed on the water spraying connecting pipe 31, water is uniformly sprayed on the roll neck of the upper roll of the casting and rolling machine, and the cooling effect of the roll diameter of the upper roll is ensured.

In order to adapt to the change of the roll diameter and ensure that the water stop assembly 8 is always in contact with the upper roll and maintains a semi-closed state, in the embodiment, a guide piece is arranged in the water storage tank 23, the water stop assembly 8 comprises a spring 82, a scraper 81 and an adjusting block 83 for adjusting the position of the spring 82, the scraper 81 and the adjusting block 83 are all movably arranged in the guide piece, the spring 82 is arranged between the scraper 81 and the adjusting block 83, one end of the spring 82 acts on the scraper 81, the other end of the spring acts on the water storage tank 23, and the scraper 81 is in contact with the roll surface of the upper roll. The utility model discloses do not limit to the shape structure of aqua storage tank 23, in order to increase the ponding volume, in this embodiment, the preferred recess of U type mouth of aqua storage tank 23.

The water-stop component 8 is arranged in the water storage tank 23 at the lower side of the upper protection plate component 2, the scraper 81 is pressed on the large press-down roller by the spring 82, and the scraper 81 can be tightly attached to the roller surface of the large press-down roller at different roller diameters by adjusting the installation position of the adjusting block 83 relative to the spring 82. The scraper 81 is suitable for different roll diameters of the casting and rolling machine, and can seal water inside the water storage tank 23 of the upper protection plate assembly 2 without flowing onto continuous casting billets. The short corrugated pipe 24 is respectively connected and communicated with the inlet side upper protection plate assembly 2 and the outlet side upper protection plate assembly 2 through threads, water which is not gasified after the cooling assembly 6 is sprayed out and cooling water of the upper roll neck cooling device 3 are collected in the water storage tank 23 of the upper protection plate assembly 2, and the water is poured onto the lower roll neck of the casting and rolling machine through the short corrugated pipe 24, so that the cooling effect of the roll diameter of the lower roll is ensured.

As shown in fig. 6, the lower water-cooled beam 4 includes a lower beam 41, a lower support 42, and a lower water gas block 43. The moving end of the lower beam 41 is lapped on a lower support 42 and fixed through a bolt, the lower support 42 is connected with a transmission side bearing seat of the casting and rolling machine through a No. 2 guide bolt 44, and the fixed end of the lower beam 41 is lapped on a lower gas block 43 and fixed on an operation side bearing seat of the casting and rolling machine through a bolt; the lower beam 41 is regularly provided with a cooling assembly 6.

The lower beam 41 is provided with a scraper blade 81 assembly with the same structure as the water-resisting assembly 8, and the scraper blade 81 is ensured to be always contacted with the lower roll through an adjusting block 83, so that the iron oxide scales adhered to the roll surface of the lower roll can be scraped off by the casting and rolling machine under the condition of different roll diameters.

Similarly, in order to balance the temperatures of the outlet side and the inlet side, in this embodiment, the guard plate assembly 5 includes an inlet lower guard plate 51 and an outlet lower guard plate 52, both the inlet lower guard plate 51 and the outlet lower guard plate 52 are provided with lower roller neck cooling devices, the water delivery assembly includes an elbow and a water delivery pipe, the elbow is respectively communicated with the water delivery pipe and a lower water cooling beam, and the nozzle is communicated with the water delivery pipe. The number of nozzles 73 provided on the inlet skirt 51 is greater than the number of nozzles 73 provided on the outlet skirt 52 to ensure uniform cooling and to reduce the thermal crown of the roll.

In order to achieve uniform cooling effect and facilitate installation, in this embodiment, the nozzles 73 on the inlet bottom plate 51 are arranged in a single row, and the nozzles 73 on the outlet bottom plate 52 are arranged in two rows. The utility model discloses do not restrict the quantity of nozzle 73 yet, in this embodiment, the quantity of nozzle 73 is 10 on entrance lower guard plate 51 subassembly 5, and the quantity of nozzle 73 is 21 on export lower guard plate 52 subassembly 5.

The utility model discloses do not specifically prescribe a limit to lower roll journal cooling arrangement 7, in order to adapt to the change in roller footpath, the water delivery subassembly is raceway 72, can be according to roller footpath length regulation. The included angle between the nozzle 73 and the lower guard plate component 5 is 50-70 degrees. In this embodiment, the lower roller neck cooling device 7 includes an elbow 71, a water pipe 72 and a nozzle 73, and two ends of the elbow 71 are respectively connected with the lower beam 41 and the water pipe 72 through threads, so as to guide cooling water into the steel pipe cavity on the upper side of the lower protection plate assembly 5. The nozzle 73 is connected with the steel pipe on the upper side of the lower guard plate component 5 by welding at an included angle of 60 degrees, and uniformly sprays cooling water to the surface of the lower roller.

In order to prolong the service life of the bearing seat, in the embodiment, the 2+8 roller combination type thick plate blank high-reduction caster roll system air-mist cooling device further comprises an upper water sealing plate 25 and a lower water sealing plate 53, wherein the upper water sealing plate 25/the lower water sealing plate 53 are arranged on the end surfaces of the bearing seats at the roll necks at the two ends of the caster roll system.

In this embodiment, the 2+8 roller combined type thick slab heavy reduction casting and rolling mill roller system aerosol cooling device further comprises a radiation partition plate 10, the radiation partition plate 10 is hung on the upper protection plate assembly 2 and is arranged between the upper protection plate assembly 2 and the lower protection plate assembly 5, and the radiation partition plate 10 is of a foldable structure. Specifically, radiation baffle 10 sets up on last water-stop sheet 25, and radiation baffle 10 can be folded, guarantees under the condition of different upper and lower roll interval, and the homoenergetic effectively keeps apart the continuous casting billet heat radiation of perpendicular to rolling line direction, protects other spare parts of casting and rolling machine.

The utility model discloses do not injectd to the concrete mounting structure of going up water-cooling roof beam 1, launching water-cooling roof beam 4, in order to adapt to each part in the thermal expansion of working process, reduce stress deformation, the utility model provides a 2+8 roller combination formula thick slab is casting and rolling machine roller system aerial fog cooling device under big pressure, goes up water-cooling roof beam 1, goes up backplate subassembly 2, down water-cooling roof beam 4 and the fixed mounting structure that backplate subassembly 5 formed down, can move about in two directions of rolling line and perpendicular rolling line trace, and concrete implementation mode is as follows: the upper support 12 is provided with a hinged hole for installing two No. 1 guide rod bolts 15; the guide rod holes for mounting the two No. 2 guide rod bolts 44 on the lower support 42 are hinged holes, so that the upper beam 11 and the lower beam 41 can slightly move in the axial direction of the guide rod holes when being heated and expanded; the holes for connecting the upper guard plate assembly 2/the lower guard plate assembly 5 with the bearing seat of the casting and rolling machine are all long holes, the upper guard plate assembly 2/the lower guard plate assembly 5 is connected with the bearing seat of the casting and rolling machine through screws, and a set gap is reserved between the upper guard plate assembly 2/the lower guard plate assembly 5 and the bearing seat of the casting and rolling machine to allow the upper guard plate assembly 2 and the lower guard plate assembly 5 to slightly move when being heated and expanded.

Through the embodiment, the utility model has the following beneficial effect or advantage:

1) compared with the prior art, the utility model discloses in, go up roller neck cooling arrangement and set up in last roller neck top through last water-cooling roof beam, carry out the roller neck cooling through the cooling water, occupation space is little, and original only reutilization goes up the cooling water of roller, carries the cooling water secondary to lower roll roller neck department, and lower roll cooling effect is poor, in order to improve the cooling effect of lower roll, the utility model discloses add lower roll roller neck cooling arrangement, guaranteed the cooling effect of lower roll roller neck, guarantee that the whole cooling is even. Meanwhile, the water-resisting component and the water-retaining cover plate prevent cooling water from dripping on the surface of the continuous casting billet to cause surface damage, and the production quality of products is improved.

2) The utility model discloses an aerial fog refrigerated mode provides safe effectual cooling for 2+8 roller combination formula thick slab greatly pushes down casting and rolling mill roll system, and its advantage lies in: the cooling range of the large-reduction roller of the large-reduction casting and rolling machine is uniform, the cooling effect can be obviously improved, the working heat convexity of the large-reduction roller is reduced, and the problems of deformation, cracks and the like of the large-reduction roller caused by poor cooling are solved; meanwhile, the cooling water can be effectively prevented from dripping on the surface of the continuous casting billet to cause surface quality damage, the surrounding type structural design can effectively reduce the thermal radiation damage of the continuous casting billet to other parts of the casting and rolling machine under high pressure, and the service life of equipment is prolonged.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. The roller system aerial fog cooling device of the 2+8 roller combined type thick plate blank high-reduction casting and rolling machine comprises an upper water cooling beam, a lower water cooling beam, an upper guard plate assembly, a lower guard plate assembly and a water blocking cover plate, wherein a water storage tank is arranged at the end part, far away from the upper water cooling beam, of the upper guard plate assembly; the upper roll neck cooling device is arranged at the roll neck of an upper roll of the high-pressure casting and rolling mill roll system and comprises a water spraying connecting pipe and a cooling water nozzle which are communicated, and the water spraying connecting pipe is communicated with the upper water cooling beam; the lower roll neck cooling equipment is arranged close to a roll neck of a lower roll of the high-reduction casting and rolling mill roll system, and comprises a water delivery assembly and a nozzle which are communicated, and the water delivery assembly is communicated with the lower water cooling beam; the water-resisting component is arranged in the water storage tank and is in contact with the roller surface of the upper roller.
2. 2. The 2+8 roller combined thick plate blank high-reduction casting and rolling machine roller system aerosol cooling device according to claim 1, characterized in that a guide piece is arranged in the water storage tank, the water-stop component comprises a spring, a scraper and an adjusting block for adjusting the position of the spring, the scraper and the adjusting block are movably arranged in the guide piece, the spring is arranged between the scraper and the adjusting block, one end of the spring acts on the scraper, the other end of the spring acts on the water storage tank, and the scraper is in contact with the roller surface of the upper roller.
3. 3. The 2+8 roller combination type thick plate blank high reduction casting and rolling mill roller system aerial fog cooling device as claimed in claim 1, characterized in that the lower protection plate component comprises an inlet lower protection plate and an outlet lower protection plate, the inlet lower protection plate and the outlet lower protection plate are both provided with the lower roller neck cooling device, the water delivery component comprises an elbow and a water delivery pipe, the elbow is respectively communicated with the water delivery pipe and the lower water cooling beam, and the nozzle is communicated with the water delivery pipe.
4. 4. The 2+8 roller combination thick slab high reduction caster roller system aerosol cooling apparatus of claim 3, wherein there are more nozzles disposed on said inlet apron lower than nozzles disposed on said outlet apron lower; the nozzles on the inlet lower guard plate are arranged in a single row, and the nozzles on the outlet lower guard plate are arranged in two rows.
5. 5. The 2+8 roller combination type thick plate blank high reduction caster roller system aerial fog cooling device as claimed in claim 1, characterized in that the upper water cooling beam comprises an upper beam, an upper support, an upper water through block and an upper air through block, the moving end of the upper beam is lapped on the upper support and is fixed by a fastener, the upper support is connected with a transmission side bearing seat of a caster through two No. 1 guide rod bolts, and the fixed end of the upper beam is lapped on the upper water through block and the upper air through block and is fixed on an operation side bearing seat of the caster through a fastener; the water spraying connecting pipe is fixed on the upper water through block through a threaded structure.
6. 6. The 2+8 roller combination type thick plate blank high reduction caster roller system aerial fog cooling device as claimed in claim 5, characterized in that the lower water-cooling beam comprises a lower beam, a lower support and a lower air block; the movable end of the lower beam is lapped on the lower support and fixed through a fastener, the lower support is connected with a transmission side bearing seat of the casting and rolling machine through two No. 2 guide rod bolts, and the fixed end of the lower beam is lapped on the lower water vapor block and fixed on an operation side bearing seat of the casting and rolling machine through a fastener.
7. 7. The 2+8 roller combination type thick plate blank high reduction caster roller system aerial fog cooling device as claimed in claim 6, characterized in that the guide rod hole for installing the No. 1 guide rod bolt of the upper support and the guide rod hole for installing the No. 2 guide rod bolt of the lower support are both reamed holes, so that the upper beam and the lower beam can move along the length direction of the guide rod hole when being heated and expanded; holes for connecting the upper guard plate assembly/the lower guard plate assembly with a bearing seat of the casting and rolling machine are all long holes, and a set gap is formed between the upper guard plate assembly/the lower guard plate assembly and the bearing seat of the casting and rolling machine so that the upper guard plate assembly/the lower guard plate assembly can move when being heated and expanded.
8. 8. The 2+8 roller combination type thick plate blank high reduction casting and rolling mill roller system aerial fog cooling device as claimed in claim 1, characterized in that the upper water cooling beam and the lower water cooling beam are provided with cooling components; the cooling assemblies comprise inlet cooling assemblies and outlet cooling assemblies which are arranged at intervals along the rolling line direction, and each outlet cooling assembly/inlet cooling assembly consists of a plurality of cooling mechanisms which are arranged at intervals along the axial direction of the roller system; the number of cooling mechanisms in the outlet cooling assembly is not less than the number of cooling mechanisms in the inlet cooling assembly.
9. 9. The 2+8 roller combination type thick plate blank high reduction caster roller system aerial fog cooling device as claimed in claim 8, wherein the upper water cooling beam and the lower water cooling beam each comprise a water collecting tank, a gas collecting tank, a water diversion pipe communicated with the water collecting tank and a gas diversion pipe communicated with the gas collecting tank, the water collecting tank, the gas collecting tank, the water diversion pipe and the gas diversion pipe form a frame structure, the cooling mechanism is an aerial fog nozzle, and the aerial fog nozzle is communicated with the water diversion pipe and the gas diversion pipe.
10. 10. The 2+8 roller combination thick slab high reduction caster roller system aerosol cooling device as claimed in any one of claims 1-9, wherein the 2+8 roller combination thick slab high reduction caster roller system aerosol cooling device further comprises a radiation baffle plate, the radiation baffle plate is hung on the upper guard plate assembly and is positioned between the upper guard plate assembly and the lower guard plate assembly, and the radiation baffle plate is of a foldable structure.

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